Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

Source/core/events/MessageEvent.h

Index: Source/core/events/MessageEvent.h
diff --git a/Source/core/events/MessageEvent.h b/Source/core/events/MessageEvent.h
index 5afcaf5cfb7675be8e110464d4100fa140d37113..f2ce8ea4ec96dcc0ae4224efc3007cbd0b1b4cce 100644
--- a/Source/core/events/MessageEvent.h
+++ b/Source/core/events/MessageEvent.h
@@ -34,7 +34,7 @@
 #include "core/events/Event.h"
 #include "core/events/EventTarget.h"
 #include "core/fileapi/Blob.h"
-#include "core/frame/LocalDOMWindow.h"
+#include "core/frame/DOMWindow.h"
 
 namespace blink {
 
@@ -81,8 +81,8 @@ public:
     static PassRefPtrWillBeRawPtr<MessageEvent> create(const AtomicString& type, const MessageEventInit& initializer, ExceptionState&);
     virtual ~MessageEvent();
 
-    void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray>);
-    void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray>);
+    void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, DOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray>);
+    void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, DOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray>);
 
     const String& origin() const { return m_origin; }
     const String& lastEventId() const { return m_lastEventId; }